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BE844897A - Procede pour la fabrication d'une boue contenant de l'acide phosphorique tres concentre et de l'hemihydrate sulfate de calcium sous une forme facilement filtrable - Google Patents

Procede pour la fabrication d'une boue contenant de l'acide phosphorique tres concentre et de l'hemihydrate sulfate de calcium sous une forme facilement filtrable

Info

Publication number
BE844897A
BE844897A BE169567A BE169567A BE844897A BE 844897 A BE844897 A BE 844897A BE 169567 A BE169567 A BE 169567A BE 169567 A BE169567 A BE 169567A BE 844897 A BE844897 A BE 844897A
Authority
BE
Belgium
Prior art keywords
sulphate
manufacture
phosphoric acid
highly concentrated
sludge containing
Prior art date
Application number
BE169567A
Other languages
English (en)
French (fr)
Inventor
Takasuke Inoue
Sataro Nakajina
Y Itoh
Shinichi Tajika
Y Saiki
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Publication of BE844897A publication Critical patent/BE844897A/xx

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B25/00—Phosphorus; Compounds thereof
    • C01B25/16—Oxyacids of phosphorus; Salts thereof
    • C01B25/18—Phosphoric acid
    • C01B25/22—Preparation by reacting phosphate-containing material with an acid, e.g. wet process

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
  • Silicon Compounds (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
BE169567A 1975-08-13 1976-08-05 Procede pour la fabrication d'une boue contenant de l'acide phosphorique tres concentre et de l'hemihydrate sulfate de calcium sous une forme facilement filtrable BE844897A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50098305A JPS5851884B2 (ja) 1975-08-13 1975-08-13 濾過性の良好な半水石膏を含有する高濃度燐酸の製造方法

Publications (1)

Publication Number Publication Date
BE844897A true BE844897A (fr) 1976-12-01

Family

ID=14216203

Family Applications (1)

Application Number Title Priority Date Filing Date
BE169567A BE844897A (fr) 1975-08-13 1976-08-05 Procede pour la fabrication d'une boue contenant de l'acide phosphorique tres concentre et de l'hemihydrate sulfate de calcium sous une forme facilement filtrable

Country Status (19)

Country Link
US (1) US4101638A (sv)
JP (1) JPS5851884B2 (sv)
AU (1) AU503183B2 (sv)
BE (1) BE844897A (sv)
BR (1) BR7605283A (sv)
CA (1) CA1067675A (sv)
DE (1) DE2636140C2 (sv)
ES (1) ES450636A1 (sv)
FR (1) FR2320903A1 (sv)
GB (1) GB1560546A (sv)
IN (1) IN143813B (sv)
IT (1) IT1066381B (sv)
MX (1) MX3803E (sv)
NL (1) NL7609049A (sv)
NZ (1) NZ181752A (sv)
SE (1) SE423975B (sv)
SU (1) SU867292A3 (sv)
TR (1) TR20187A (sv)
ZA (1) ZA764875B (sv)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4277454A (en) * 1979-09-18 1981-07-07 J. R. Simplot Company Methods for the control of excessive corrosion in phosphoric acid circuits
US4367197A (en) * 1979-09-18 1983-01-04 J. R. Simplot Company Method for the control of excessive corrosion in phosphoric acid circuits
DE3117813A1 (de) * 1981-05-06 1982-11-25 Chemische Werke Hüls AG, 4370 Marl Verfahren zur herstellung von gipsformsteinen
LU84713A1 (fr) * 1983-03-25 1984-11-14 Prayon Soc Procede et preparation d'acide phosphorique et de sulfate de calcium hemihydrate alpha
FR2598402B1 (fr) * 1986-05-07 1990-06-01 Rhone Poulenc Chimie Procede de nettoyage de surfaces filtrantes
JPH0620201U (ja) * 1992-05-13 1994-03-15 株式会社テイモー 結束具
US5590983A (en) * 1995-09-05 1997-01-07 Angell; Edwin C. Method of improving soil irrigation with an improved solution grade calcium sulfate dihydrate
US7582308B2 (en) * 2002-12-23 2009-09-01 Kimberly-Clark Worldwide, Inc. Odor control composition
US7141518B2 (en) 2003-10-16 2006-11-28 Kimberly-Clark Worldwide, Inc. Durable charged particle coatings and materials
US7413550B2 (en) 2003-10-16 2008-08-19 Kimberly-Clark Worldwide, Inc. Visual indicating device for bad breath
US7794737B2 (en) 2003-10-16 2010-09-14 Kimberly-Clark Worldwide, Inc. Odor absorbing extrudates
US7488520B2 (en) 2003-10-16 2009-02-10 Kimberly-Clark Worldwide, Inc. High surface area material blends for odor reduction, articles utilizing such blends and methods of using same
US7678367B2 (en) 2003-10-16 2010-03-16 Kimberly-Clark Worldwide, Inc. Method for reducing odor using metal-modified particles
US7582485B2 (en) 2003-10-16 2009-09-01 Kimberly-Clark Worldride, Inc. Method and device for detecting ammonia odors and helicobacter pylori urease infection
US7754197B2 (en) 2003-10-16 2010-07-13 Kimberly-Clark Worldwide, Inc. Method for reducing odor using coordinated polydentate compounds
US7438875B2 (en) * 2003-10-16 2008-10-21 Kimberly-Clark Worldwide, Inc. Method for reducing odor using metal-modified silica particles
US7837663B2 (en) 2003-10-16 2010-11-23 Kimberly-Clark Worldwide, Inc. Odor controlling article including a visual indicating device for monitoring odor absorption
US7879350B2 (en) * 2003-10-16 2011-02-01 Kimberly-Clark Worldwide, Inc. Method for reducing odor using colloidal nanoparticles
US20150175424A1 (en) * 2013-12-23 2015-06-25 Italo Innamorati Process for the production of phosphoric acid
TWI726907B (zh) * 2015-09-04 2021-05-11 日商獅子股份有限公司 硫酸鈣粒子及其製造方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1969449A (en) * 1931-10-17 1934-08-07 Rumford Chemical Works Process of producing by-product calcium sulphate
CA718837A (en) * 1962-06-23 1965-09-28 Toyo Engineering Corporation Wet-process phosphoric acid manufacture by the semihydrate-dihydrate calcium sulphate method
US3653826A (en) * 1967-09-21 1972-04-04 Nissan Chemical Ind Ltd Process for the production of phosphoric acid at a high concentration and a gypsum by-product of improved quality
GB1248037A (en) * 1968-01-13 1971-09-29 Fisons Ltd Calcium sulphate
GB1278247A (en) * 1968-11-15 1972-06-21 Fisons Ltd Phosphoric acid

Also Published As

Publication number Publication date
GB1560546A (en) 1980-02-06
DE2636140C2 (de) 1987-04-09
NL7609049A (nl) 1977-02-15
NZ181752A (en) 1978-06-02
AU503183B2 (en) 1979-08-23
AU1672476A (en) 1978-02-16
TR20187A (tr) 1980-11-01
SE423975B (sv) 1982-06-21
ZA764875B (en) 1977-07-27
FR2320903A1 (fr) 1977-03-11
DE2636140A1 (de) 1977-02-24
US4101638A (en) 1978-07-18
SU867292A3 (ru) 1981-09-23
IT1066381B (it) 1985-03-04
JPS5851884B2 (ja) 1983-11-18
CA1067675A (en) 1979-12-11
MX3803E (es) 1981-07-22
BR7605283A (pt) 1977-08-09
FR2320903B1 (sv) 1981-05-22
SE7609051L (sv) 1977-02-14
JPS5221296A (en) 1977-02-17
ES450636A1 (es) 1977-12-16
IN143813B (sv) 1978-02-04

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Legal Events

Date Code Title Description
RE Patent lapsed

Owner name: NISSAN CHEMICAL INDUSTRIES LTD

Effective date: 19880831